Vehicle-tire.



llNlTE ARTHUR-H. MARKS, OF AKRON. OHIO.

VEHICLE-TIRE.

To mil u fgmn it wury concern:

lle it known'that l, Aurnrn ll. Manns, a

citizen of the United States, residing at Akron, in the county of Summit and State of Ohio, have invented a certain new and useful improvement in Vehicle-'lires, of

description.

The use of sol1d rubber tires on vehicle wheels is increasing rapldl'y: and there are indications in the trade of a growing demand for such tires in sizes too large for the imuiufacturcr's to vulcanize properly in a reasonable time, and too large to be satisfactorilyscured upon the wheel rim by any of the fastening devices heretofore employed for fastening rubber tires upon wheel rims. It is therefore impracticable to make, as well as to use such wide rubber tires as seem to be demanded. A fairly satisfactory substitute has, however, been suggested in what is sometimes called a twin tire, that is to say, a structure which broadly defined consists of two rubber tires vulcanized to a single base. Theoretically, this is an entirely satisfactory solution of the problem, because a twin tire furnishes more traction. with less wear than a single tire of like weight. It has been found, however, that the twin tires in use are apt to be pulled loosefrom their common base unless the base and tire are formed with interlocking tongues and grooves, which latter construction is too expensive to be altogether satisfactory.

The advantage of my in ention is to produce a twin tire by using two single tires of almost any-of the well known constructions, in combination with a sui table rim, and means for holding said tires thereon. The resultantis less expensive than any construction of twin tires heretofore produced,

1 1 g is more durable, and 1s equally good 111 every respect. It will, moreover, commend itself to nmnufactiu-ers because it does not.

put them to the necessity of building additional molds for the manufacture of twin tires.

The invention consists in the construction and combinations of parts hereinafter described and definitely pointed out in the claim.

In the drawing, Figure l isa transverse sectional view of the invention in an approved form': Fig. 2 1s a plan view of a short section of the rim, and a ring there on,-showing a meansztor contracting said 'wardly extended flanges at the and a plurality of rubber tires fitted upon Specificationof Letters Patent. Patented Aug. 29, 1311. Application filed March '26. 1906: $er'ia1 No. 307,969.

ring upon the rim; and Fig. 3 is a side view of a. wheel aim and tires constructed in accordance with the presentinvention.

Referring to the parts by letters, A represents a wheel rim: and a a represent flanges at the sides of said 1'1ll1,-WlNCl1 flanges may which the followlng 1s a full, clear, and exact be integral with the rim as shown in Fig. 1, although other structures may be used to accomplish the same purpose. -On this rim are two vulcanized rubber tires B B'which may be of well known construction. As shown in Fig. 1 these tires have laterally widened. bases L which arewidest a short distance outside of their inner peripheries. At the widest part of each tire, transverse metal rods Z) are cn'ibcdded at suitable in tervals, said rods being in such position that the fastenin devices, which may be wires, C, may engage upon said rods near their ends.

1) represents a ring, which should preferably be made of'mctal, and is removably titted upon rim A. This ring may be split; and any suitable means, as a right and left handed screw (1, may be provided for tightening the. ring upon the rim. In the best construction the side faces of this ring should conform in shape to the side faces of the base parts 6 of the two tires between which the ring lies, and with which itengages. Exact conformity in the shape of these engaging sides is not, however, absolutely essential. The ring D extends outward from the rim beyond the base part I) of the tires, and consequently between the ends of the rods a. Said ring then serves three functions, viz. it assists in preventing lateral Increment of the tires upon the-rim; it prevents lateral movement of the rods h in the tires; and also prevents any such lateral movement of the fastening wires C as will allow them to disengage the tire bases. The retaining devices may be wires or bands (3 applied in the ordinary way which is well understood in this art.

It is obvious that, with the construction hereinbefore described, one is not limited to the asset wo tires upon the rim. Any retion with a rim of suitable width, and rings D, of which onewill be interposed between the approximate edges of adjacent tires.

vquit-ed number may be employedin eonnec L05 Having described my'invention, I claim:

The combination of a wheel iriin, outsides'thereof,

AVAEMBLE COPY said rim, with asplit ring remoyabiy fittecl 1 ing said ring in diameter while upon said 13' upon said rim and lying between and in rim.

engagement with the approximate edges of In testimony whereof, I hereunto afiix my t-le baslse portionsf of said tires; the side faces signature in the presence of two witnesses.

o saic i'in con onning in sha e to the side 1 w faces of ti; tire bases with wh ioh said ring ARI HUB MARhb' engages and fastening devices engaging Witnesses:

upon both edges of each tire-t0 hold said Bnssm C. Loom,

tires upon the rim, and means for contract 1). GALEHonsE. 

